Natural Selection
A measure of how well an organism can survive in its environment
Fitness
Mechanism where organisms with the "best" traits are favored and thus live longer and produce more offspring
Natural selection
The formation of a new species
Speciation
A structure with no function, potentially leftover from an ancestor
Vestigial structure
What type of cell do organisms in the domain Eukarya have?
Eukaryotic cells
A beneficial trait
Adaptation
Favoring traits that increase reproduction over survival
Sexual selection
Slow incremental changes over long periods of time
Gradualism
The study of chemical processes in living things
Biochemistry
Which kingdom has organisms with chitin in their cell walls?
Fungi
All of the alleles present in a population
Gene pool
Random change in a population that often decreases variation
Genetic drift
Two populations of organisms form a specialized relationship, causing them to evolve together
Nonfunctional genes leftover from an ancestor
Pseudogenes
Are archaebacteria unicellular, multicellular, or both?
Unicellular
Mode of selection that favors one extreme
Directional
The movement of genes into or out of a population
Gene flow
When related species branch off from each other, due to living in different environments
Divergent evolution
A species that exists only in one geographic region
Endemic species
Which kingdom contains organisms that are exclusively autotrophs?
Plantae
Principle that states there are more organisms than resources, creating competition
Overproduction of offspring
When there are no changes in the allele frequencies in a population over time
Genetic equilibrium
Quick bursts of drastic change, followed by periods of genetic stability
Punctuated equilibrium
Structures that evolved separately to have similar functions due to convergent evolution
Analogous structures
Which two kingdoms contain organisms that can have chloroplasts?
Protista and Plantae